I understand what this song is generally about, but there are some parts that are unclear:
不愉快な笑みを向け長い沈黙の後態度を更に悪くしたら
冷たいアスファルトに額を搾らせて期待はずれのあたし を攻めた
Who smiled? I don't understand clearly what happened after the boyfriend bowed. This seems to say he attacked her, but I don't see how he could do that while bowing. Maybe he said something offensive to her but it seems weird to do that at the same time he's bowing. I'm not picturing it. I assume that the reason he's bowing is he's begging her to stay.
君が周りを無くした
This says he "lost his surroundings," but what does that mean?
短い嘘を繋げ赤いものに替えて
疎外されていく本音を伏せた
What does it mean for the little lies to turn red? I've heard that it means 真っ赤な嘘, which means big lie, but someone else gave a different explanation about it having to do with fate.
The lyrics are
here, followed by an analysis. I was having trouble understanding everything that was written there.